Satellite Radio Tuner (Factory Installed) Left Channel Audio Signal Circuit Inspection

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS

Turn ignition switch OFF.
Disconnect satellite radio tuner (factory installed) connector B137 (A) and audio unit connector M109 (B).

Check continuity between satellite radio tuner (factory installed) and audio unit.

SATELLITE RADIO TUNER (FACTORY INSTALLED) AND AUDIO UNIT

Terminals				Continuity
Satellite radio tuner		Audio unit
Connector	Terminal	Connector	Terminal
A: B137	21	B: M109	41	Yes
A: B137	22	B: M109	42	Yes

Check continuity between satellite radio tuner (factory installed) and ground.

SATELLITE RADIO TUNER (FACTORY INSTALLED) AND GROUND

Terminals			Continuity
Satellite radio tuner		-
Connector	Terminal	-
A: B137	21	Ground	No
A: B137	22	Ground	No

Fig 1: Checking Continuity Between Satellite Radio Tuner And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 2.

NG: Repair harness or connector.

CHECK LEFT CHANNEL AUDIO SIGNAL
1. Connect satellite radio tuner (factory installed) and audio unit.
2. Turn ignition switch ON.
3. Check signal between satellite radio tuner (factory installed) connector B137 terminals 21 and 22 with CONSULT-III or oscilloscope.
  21 - 22: Refer to "TERMINALS AND REFERENCE VALUE FOR SATELLITE RADIO TUNER ".
Fig 2: Checking Signal Between Satellite Radio Tuner Connector B137 Terminals 21 And 22
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: Replace satellite radio tuner. Refer to "SATELLITE RADIO TUNER ".

NG: Replace audio unit. Refer to "AUDIO UNIT ".